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The synchronous motor of Problem 5.7 is supplied from a 575-V source through a feeder with a reactive impedance of Xf = 0.95 2. The motor is operating at rated speed and source voltage and at an output power of 40 kW. Ignoring losses in the motor, calculate the magnitude and phase angle of the line-to-neutral generated voltage af, the field current If and the line-to-line motor terminal voltage V₁ if the motor is operating at (a) 0.9 power factor lagging, (b) unity power factor, and (c) 0.9 power factor leading as measured at the 575-V source.

The synchronous motor of Problem 5.7 is supplied from a 575-V source through a feeder with a reactive impedance of Xf = 0.95 2. The motor is operating at rated speed and source voltage and at an output power of 40 kW. Ignoring losses in the motor, calculate the magnitude and phase angle of the line-to-neutral generated voltage af, the field current If and the line-to-line motor terminal voltage V₁ if the motor is operating at (a) 0.9 power factor lagging, (b) unity power factor, and (c) 0.9 power factor leading as measured at the 575-V source.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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The synchronous motor of Problem 5.7 is supplied from a 575-V source through a feeder with a reactive impedance of Xf = 0.95 $2. The motor is operating at rated speed and source voltage and at an output power of 40 kW. Ignoring losses in the motor, calculate the magnitude and phase angle of the line-to-neutral generated voltage af, the field current If and the line-to-line motor terminal voltage V₁ if the motor is operating at (a) 0.9 power factor lagging, (b) unity power factor, and (c) 0.9 power factor leading as measured at the 575-V source.
Transcribed Image Text:The synchronous motor of Problem 5.7 is supplied from a 575-V source through a feeder with a reactive impedance of Xf = 0.95 $2. The motor is operating at rated speed and source voltage and at an output power of 40 kW. Ignoring losses in the motor, calculate the magnitude and phase angle of the line-to-neutral generated voltage af, the field current If and the line-to-line motor terminal voltage V₁ if the motor is operating at (a) 0.9 power factor lagging, (b) unity power factor, and (c) 0.9 power factor leading as measured at the 575-V source.
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What is the line-to-line motor terminal voltage Va for a),b) and c)?

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